Go to Settings > Security on your device and toggle on Unknown Sources to allow installations from outside the Play Store.

Viber’s official minimum requirement has gradually increased over the years. As of late 2023, the latest Viber updates (version 20.0 and above) require . This means that if you head to the Google Play Store on a KitKat device, you will see the dreaded message: "Your device isn't compatible with this version."

tab and look for the purple speech bubble or pencil icon to select a contact. Voice/Video Calls : Open a contact's chat and tap the icon for voice or the icon for video.

The last version of Viber that worked on Android 4.4.2 was deprecated in . To use Viber, you now need Android 5.0 (Lollipop) or higher .

Running a legacy app on a legacy OS is not always smooth sailing. If you manage to get Viber running on Android 4.4.2, you may encounter these specific issues:

It does not necessarily mean the app stops working immediately. Instead, it means: